Strong's #1290: diaspora (pronounced dee-as-por-ah')
 from 1289; dispersion, i.e. (specially and concretely) the (converted) Israelite resident in Gentile countries:--(which are) scattered (abroad).
Thayer's Greek Lexicon:
 ́ 
 
  diaspora 
 
 1) a scattering, dispersion
 
 1a) of Israelites dispersed among foreign nations
 1b) of the Christians scattered abroad among the Gentiles
 
  Part of Speech: noun feminine
Relation: from G1289
  Citing in TDNT: 2:98, 156
 
Usage:
This word is used 3 times:
John 7:35: "go unto the  dispersed among the Gentiles, and teach"
James 1:1: "twelve tribes which  are scattered abroad, greeting."
1 Peter 1:1: "of Jesus Christ, to the strangers  scattered throughout Pontus, Galatia, Cappadocia, Asia,"